Advanced Calcium-Thionyl Chloride High-Power Battery.
Final rept. 23 Dec 87-22 Dec 88,
RAMAT-TEL-AVIV UNIV AUTHORITY FOR RESEARCH AND INDUSTRIAL DEVELOPMENT LTD (IS RAEL)
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Recently TAU has made a breakthrough in the development of two advanced Calcium Thionyl chloride systems which have much better storage properties than the state-of-art Ca-SOC12 cell. This has been done by replacing the CaX2XA1C14 electrolyte by SrX2 type A, or BaX2 type B. The projects goals are to gain a better understanding fo the electrochemistry of the advanced systems and to establish their safety and performance. This report contains four chapters. The calorimetric study of CaSrA1C142-SOC127vvSO2 C-size cells during constant-temperature discharge is reported in chapter 1. Fresh and stored 70 C for four weeks cells were discharged inside a dedicated home-made calorimeter on two loads. There was no significant difference between fresh and stored cells with respect to heat generation during discharge. There was no loss in capacity during four weeks of storage at 70 C. Chapter 2 presents a calorimetric study of the baseline cell CaCaA1C142-SOC12 7 VVSO2. Chapter 3 presents the performance, safety and storage properties of CaCaX2 and CASrX2 cells. Chapter 4 presents a summary of the results regarding the properties of MX2-SO2-TC solutions MCa,Sr,Ba including Raman spectra, viscosity and conductivity data. We explain the effect of SO2 and temperature on the conductivity and conduction mechanism. AW
- Electrochemical Energy Storage